using CocoTest.Core.Services;
using MvvmCross.Core.ViewModels;

namespace CocoTest.Core.ViewModels
{
    public class LoginViewModel : MvxViewModel
	{
		#region Fields
		readonly ILoginService _loginService;
		readonly IDialogService _dialogService;
		#endregion Fields

		#region Constructors
		public LoginViewModel(ILoginService loginService, IDialogService dialogService)
		{
			_loginService = loginService;
			_dialogService = dialogService;
		}
		#endregion Constructors

		#region Properties
		string _userName;
		public string UserName
		{
			get
			{
				return _userName;
			}
			set
			{
				_userName = value;
				RaisePropertyChanged(() => UserName);
			}
		}

		string _password;
		public string Password
		{
			get
			{
				return _password;
			}
			set
			{
				_password = value;
				RaisePropertyChanged(() => Password);
			}
		}

		IMvxCommand _loginCommand;
		public IMvxCommand LoginCommand
		{
			get
			{
				_loginCommand = _loginCommand ?? new MvxCommand(AttemptLogin);
				return _loginCommand;
			}
		}
		#endregion Properties

		#region Private Methods
		async void AttemptLogin()
		{
			var ok = await _loginService.Login(UserName, Password);
			if (ok)
			{
				ShowViewModel<MainViewModel>();
			}
			else
			{
				_dialogService.Alert("Inicio de sesión fallido", "Error", "OK");
			}
		}

		#endregion Private Methods
	}
}